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Diffstat (limited to 'src/dev/arm/Display.py')
| -rw-r--r-- | src/dev/arm/Display.py | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/src/dev/arm/Display.py b/src/dev/arm/Display.py new file mode 100644 index 000000000..36e4feaf0 --- /dev/null +++ b/src/dev/arm/Display.py @@ -0,0 +1,127 @@ +# Copyright (c) 2019 ARM Limited +# All rights reserved. +# +# The license below extends only to copyright in the software and shall +# not be construed as granting a license to any other intellectual +# property including but not limited to intellectual property relating +# to a hardware implementation of the functionality of the software +# licensed hereunder. You may use the software subject to the license +# terms below provided that you ensure that this notice is replicated +# unmodified and in its entirety in all distributions of the software, +# modified or unmodified, in source code or in binary form. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions are +# met: redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer; +# redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution; +# neither the name of the copyright holders nor the names of its +# contributors may be used to endorse or promote products derived from +# this software without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +# +# Authors: Giacomo Travaglini + +from m5.params import * +from m5.SimObject import SimObject +from m5.util.fdthelper import * + +class Display(SimObject): + type = 'Display' + cxx_header = "dev/arm/display.hh" + clock_frequency = Param.Unsigned("clock-frequency property") + hactive = Param.Unsigned("hactive property") + vactive = Param.Unsigned("vactive property") + hfront_porch = Param.Unsigned("hfront-porch property") + hback_porch = Param.Unsigned("hback-porch property") + hsync_len = Param.Unsigned("hsync-len property") + vfront_porch = Param.Unsigned("vfront-porch property") + vback_porch = Param.Unsigned("vback-porch property") + vsync_len = Param.Unsigned("vsync-len property") + + _endpoint_node = None + + def endpointPhandle(self): + return "encoder_endpoint" + + def endpointNode(self): + assert self._endpoint_node is not None + return self._endpoint_node + + def generateDeviceTree(self, state): + # timing node + timing_node = FdtNode(self.timingNode()) + + timing_node.append(FdtPropertyWords( + "clock-frequency", [self.clock_frequency])) + timing_node.append(FdtPropertyWords( + "hactive", [self.hactive])) + timing_node.append(FdtPropertyWords( + "vactive", [self.vactive])) + timing_node.append(FdtPropertyWords( + "hfront-porch", [self.hfront_porch])) + timing_node.append(FdtPropertyWords( + "hback-porch", [self.hback_porch])) + timing_node.append(FdtPropertyWords( + "hsync-len", [self.hsync_len])) + timing_node.append(FdtPropertyWords( + "vfront-porch", [self.vfront_porch])) + timing_node.append(FdtPropertyWords( + "vback-porch", [self.vback_porch])) + timing_node.append(FdtPropertyWords( + "vsync-len", [self.vsync_len])) + + timing_node.appendPhandle(self.timingNode()) + + # display timing node + dispt_node = FdtNode("display-timings") + dispt_node.append(FdtPropertyWords("native-mode", + state.phandle(self.timingNode()))) + dispt_node.append(timing_node) + + # endpoint node + endpoint_node = FdtNode("endpoint") + endpoint_node.appendPhandle( + self.endpointPhandle()) + + # Assign node so that it can be retrieved + self._endpoint_node = endpoint_node + + # port node + port_node = FdtNode("port") + port_node.append(endpoint_node) + + # Virt-encoder + node = FdtNode("virt-encoder") + node.appendCompatible(["drm,virtual-encoder"]) + node.append(dispt_node) + node.append(port_node) + + yield node + +class Display1080p(Display): + clock_frequency = 148500000 + hactive = 1920 + vactive = 1080 + hfront_porch = 148 + hback_porch = 88 + hsync_len = 44 + vfront_porch = 36 + vback_porch = 4 + vsync_len = 5 + + def timingNode(self): + return "timing_1080p60" |